ClassValidationAttribute Class

public abstract class ClassValidationAttribute : Attribute

Public MustInherit Class ClassValidationAttribute
	Inherits Attribute

Dim instance As ClassValidationAttribute

public ref class ClassValidationAttribute abstract : public Attribute

Inheritance

Object    Attribute    ClassValidationAttribute

Derived

Ookii.CommandLine.ValidationRequiresAnyAttribute

Class validators are executed when all arguments have been parsed, and allow you to check whether the whole set of arguments meets a condition. Use this instead of ArgumentValidationAttribute if the type of validation being performed doesn't belong to a specific argument, or must be performed even if the argument(s) don't have values.

If validation fails, the validator will throw a CommandLineArgumentException with the category specified in the ErrorCategory property. The CommandLineParserTParseWithErrorHandling method, the CommandLineParserParseT(String, ParseOptions) method, the generated IParserTSelfParse(ParseOptions), and the CommandManager class will automatically display the error message and usage help if validation failed.

A built-in validator is provided, and you can derive from this class to create custom validators.

Reference